Add support for loading footer buttons in ConfirmationDialog

[langermank]

Closes https://github.com/github/primer/issues/5632

Changelog

New

Passes loading functionality to ConfirmationDialog, and also adds a story showing how to do this in Dialog. Plus some tests 😄

Changed

Removed

Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

Testing & Reviewing

Merge checklist

• Added/updated tests
• Added/updated documentation
• Added/updated previews (Storybook)
• Changes are SSR compatible
• Tested in Chrome
• Tested in Firefox
• Tested in Safari
• Tested in Edge
• (GitHub staff only) Integration tests pass at github/github (Learn more about how to run integration tests)

[changeset-bot]

🦋 Changeset detected

Latest commit: 5bc1285

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 3 packages

Name	Type
@primer/react	Patch
@primer/mcp	Patch
@primer/styled-react	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[github-actions]

👋 Hi, this pull request contains changes to the source code that github/github depends on. If you are GitHub staff, we recommend testing these changes with github/github using the integration workflow. Thanks!

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	90.28 KB (+0.1% 🔺)
packages/react/dist/browser.umd.js	90.45 KB (-0.01% 🔽)

[Copilot]

Pull Request Overview

This pull request adds support for loading states to footer buttons in the ConfirmationDialog component. The enhancement allows developers to display loading spinners and disable button interactions during asynchronous operations.

Key changes:

• Added cancelButtonLoading and confirmButtonLoading props to ConfirmationDialog
• Enhanced Dialog component to properly handle loading states in footer buttons
• Added comprehensive test coverage for loading state behaviors

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/react/src/ConfirmationDialog/ConfirmationDialog.tsx	Added loading props and passed them to footer button configurations
packages/react/src/ConfirmationDialog/ConfirmationDialog.test.tsx	Added comprehensive test suite for loading state behaviors
packages/react/src/ConfirmationDialog/ConfirmationDialog.features.stories.tsx	Added interactive story demonstrating loading states
packages/react/src/Dialog/Dialog.test.tsx	Added test coverage for loading functionality in Dialog footer buttons
packages/react/src/Dialog/Dialog.features.stories.tsx	Added stories showcasing loading states in Dialog components
.changeset/big-oranges-marry.md	Added changeset entry for patch release

---

_{You can also share your feedback on Copilot code review for a chance to win a $100 gift card. Take the survey.}

[hectahertz]

We should group these props in an object for each button, let's merge this for now!